Task 1: Configure Routing
Step 1. Configure a default route to ISP.

R2
Password: cisco
R2>en
Password: class
R2#conf t
R2(config)#ip route 0.0.0.0 0.0.0.0 s0/1/0

Step 2. Configure OSPF routing between R1, R2, and R3.

R2(config)#route ospf 1
R2(config-router)#network 192.168.20.0 255.255.255.252 area 0
R2(config-router)#network 10.1.1.0 0.0.0.3 area 0
R2(config-router)#network 10.2.2.0 0.0.0.3 area 0
R2(config-router)#default-information originate
R2(config-router)#passive-interface f0/1
R2(config-router)#passive-interface s0/1/0

R1
Password: cisco
R1>en
Password: class
R1#conf t
R1(config)#router ospf 1
R1(config-router)#network 192.168.10.0 0.0.0.255 area 0
R1(config-router)#network 10.1.1.0 0.0.0.3 area 0
R1(config-router)#passive-interface f0/1

R3
Password: cisco
R3>en
Password: class
R3#conf t
R3(config)#router ospf 1
R3(config-router)#network 192.168.30.0 0.0.0.255 area 0
R3(config-router)#network 10.1.1.0 0.0.0.3 area 0
R3(config-router)#passive-interface f0/1

Task 2: Configure OSPF Authentication
Step 1. Configure MD5 authentication between R1, R2, and R3.
Configure OSPF MD5 authentication between R1, R2, and R3 using 1 as the key value and a cisco123 as the password.

R1
R1(config-router)#area 0 authentication  message-digest
R1(config-router)#exit
R1(config)#int s0/0/0
R1(config-if)#ip ospf message-digest-key 1 md5 cisco123
R1(config-if)#exit
R1(config)#

R2
R2(config-router)#area 0 authentication message-digest
R2(config-router)#exit
R2(config)#int s0/0/0
R2(config-if)#ip ospf message-digest-key 1 md5 cisco123
R2(config-if)#exit
R2(config)#
R2(config)#int s0/0/1
R1(config-if)#ip ospf message-digest-key 1 md5 cisco123
R1(config-if)#exit
R2(config)#

R3
R3(config-router)#area 0 authentication message-digest
R3(config-router)#exit
R3(config)#int s0/0/1
R3(config-if)#ip ospf message-digest-key 1 md5 cisco123
R3(config-if)#exit
R3(config)#

Task 3: Upgrade the Cisco IOS Image

Step 1. Copy a newer image from the TFTP server to flash on R2.

Look under the Config tab for the TFTP server to determine the name of the newer Cisco IOS image. Then copy the newer image to flash on R2.

Step 2. Configure R2 to boot with the new image.

R2#sh version
Cisco IOS Software, 1841 Software (C1841-IPBASE-M), Version 12.3(14)T7, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2006 by Cisco Systems, Inc.
Compiled Mon 15-May-06 14:54 by pt_team

ROM: System Bootstrap, Version 12.3(8r)T8, RELEASE SOFTWARE (fc1)

System returned to ROM by power-on
System image file is "flash:c1841-ipbase-mz.123-14.T7.bin"

R2#copy tftp flash
Address or name of remote host []? 192.168.20.254
Source filename []? c1841-ipbasek9-mz.124-12.bin
Destination filename [c1841-ipbasek9-mz.124-12.bin]?

Accessing tftp://192.168.20.254/c1841-ipbasek9-mz.124-12.bin…
Loading c1841-ipbasek9-mz.124-12.bin from 192.168.20.254: !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 16599160 bytes]

16599160 bytes copied in 1.288 secs (2883740 bytes/sec)

R2#conf t
R2(config)#boot system flash c1841-ipbasek9-mz.124-12.bin
R2(config)#exit
R2#show flash

System flash directory:
File  Length   Name/status
  1   13832032 c1841-ipbase-mz.123-14.T7.bin
  3   16599160 c1841-ipbasek9-mz.124-12.bin
[30431192 bytes used, 2082856 available, 32514048 total]
32768K bytes of processor board System flash (Read/Write)

R2#copy running-config startup-config
Destination filename [startup-config]?
Building configuration…
[OK]